Anatomical features that are fully developed and functional in one group of organisms but reduced and functionless in a similar group are termed
A) vestigial.
B) homologous.
C) analogous.
D) polygenic.
E) sympatric.

Question

Quizplus · Accepted Answer

Anatomical features that are fully developed and functional in one group of organisms but reduced and functionless in a similar group are called vestigial. This is because the feature no longer serves a purpose in the organism that has it, and is thought to be a remnant of a feature that was present and useful in a common ancestor of the two groups.

Anatomical Features That Are Fully Developed and Functional in One